Audio-Technica AT831R dimensions Specifications, frequency response 40-16,000Hz, polar pattern

403

AT831R

Output shall be low impedance balanced (250 ohms).

The microphone shall have a 4 m (13.1') permanently attached miniature cable terminating in a TA3F-type output connector. The output connector shall connect to a TB3M-type jack on the included power module. The power module shall contain a recessed switch to permit choice of flat response or 80 Hz low-frequency roll-off. The output of the power module shall be a 3-pin XLRM-type connector.

The microphone shall be 25.0 mm (0.98") long and have a diameter of

10.2mm (0.40"). Weight shall be 2.8 grams (0.1 oz). The microphone shall include a power module, a clothing clip, an instrument adapter, a windscreen and a protective carrying case. Finish shall be low- reflectance black.

The microphone shall also be available with a 1.4 m (55") permanently attached miniature cable terminated for use with Audio-Technica UniPak® body-pack transmitters and a variety of other manufacturers’ wireless systems. No power module shall be required or included with the wireless models. The wireless models’ dimensions and polar pattern shall be identical to those of the wired model. The microphone shall also be available unterminated.

The Audio-Technica AT831R is specified.

The Audio-Technica [AT831cW]; [AT831cT]; [AT831cT5]; [AT831HRS-6] (wireless version) is specified.

The Audio-Technica AT831c (unterminated) is specified.

Specifications
Element	Fixed-charge back plate, permanently
	polarized condenser
Polar pattern	Cardioid
Frequency response	40-16,000 Hz
Low frequency roll-off	80 Hz, 18 dB/octave
Open circuit sensitivity	–42 dB (7.9 mV) re 1V at 1 Pa
Impedance	250 ohms
Maximum input sound level	141 dB SPL, 1 kHz at 1% T.H.D.
Dynamic range (typical)	112 dB, 1 kHz at Max SPL
Signal-to-noise ratio1	65 dB, 1 kHz at 1 Pa
Phantom power requirements	11-52V DC, 2 mA typical
Switch	Flat, roll-off
Weight	Microphone: 2.8 g (0.1 oz)
	Power module: 81 g (2.9 oz)
Dimensions	Microphone: 25.0 mm (0.98") long,
	10.2 mm (0.40") diameter
	Power module: 92.9 mm (3.66") long,
	18.9 mm (0.74") diameter
Output connector	Power module: Integral 3-pin XLRM-type
Cable	4.0 m (13.1') long (permanently attached
	to microphone), 3.2 mm (0.13") diameter,
	2-conductor, shielded cable with TA3F-
	type connector
Audio-Technica case style	M1
Accessories furnished	AT8538 power module; AT8419 clothing
	clip; AT8444 instrument adapter; AT8116
	windscreen; protective carrying case

In the interest of standards development, A.T.U.S. offers full details on its test methods to other industry professionals on request.

1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL

1Typical, A-weighted, using Audio Precision System One. Specifications are subject to change without notice.

frequency response: 40–16,000 Hz

	in dB
	Response
10 dB

50	100	200	500	1k	2k	5k	10k	20k
			Frequency in Hertz
LEGEND		12" or more on axis
		Roll-off
polar pattern
	330˚	0˚	30˚
300˚				60˚
270˚				90˚
240˚				120˚
					LEGEND
210˚			150˚			200 Hz
		180˚				1 kHz
						5 kHz
SCALE IS 5 DECIBELS PER DIVISION
						8 kHz

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Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
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